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Measuring Biomethane Potential of Food Scrap Waste Anaerobically Co&#45;Digested with Waste&#45;Activated Sludge Using Respirometry
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Enzymatic processing of municipal solid waste.

Jacob Wagner Jensen1, Claus Felby, Henning Jørgensen

  • 1Forest and Landscape, University of Copenhagen, Rolighedsvej 23, DK-1958 Frederiksberg, Denmark. wagner@life.ku.dk

Waste Management (New York, N.Y.)
|August 24, 2010
PubMed
Summary
This summary is machine-generated.

Enzymatic liquefaction effectively processed municipal solid waste (MSW) organics and paper. Celluclast 1.5L significantly reduced viscosity, recovering over 90% of dry matter as a liquid slurry suitable for biogas plants.

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Area of Science:

  • Biotechnology and Waste Management
  • Enzymatic Processes for Waste Valorization

Background:

  • Municipal solid waste (MSW) presents a significant disposal challenge.
  • Efficiently processing organic and paper fractions of MSW is crucial for resource recovery and waste reduction.

Purpose of the Study:

  • To investigate the enzymatic liquefaction of municipal solid waste (MSW) organics and paper.
  • To evaluate the effectiveness of Celluclast 1.5L and other enzymes on liquefaction efficiency, particle size, and viscosity.

Main Methods:

  • Lab-scale (50 g) and vessel-tests (50 kg) were conducted using model and authentic MSW.
  • Enzymatic treatments involved Celluclast 1.5L, α-amylase, and protease.
  • Evaluations included particle size analysis, viscosity measurements, and Scanning Electron Microscopy (SEM).

Main Results:

  • Celluclast 1.5L demonstrated a significant effect on reducing viscosity during MSW liquefaction.
  • Paper particles were identified as a major component requiring further treatment for complete liquefaction.
  • Pilot-scale tests achieved over 90% recovery of organic and paper dry matter as a liquid slurry, even at high dry matter loadings (up to 35%).

Conclusions:

  • Enzymatic liquefaction, particularly with Celluclast 1.5L, is a viable method for processing MSW organics and paper.
  • The process effectively separates degradable fractions, facilitating their transfer to biogas plants.
  • High dry matter loadings can be managed, indicating scalability and efficiency of the enzymatic liquefaction process.